Having set my RO Unit up...................wrongly (well tubing anyway), I added my salt for a water change.
I went to measure the Salinity with my Refractometer. However it slipped out my hand and snap. I tried counter measures but it seems knackered.
Now, I'm using a silly little floaty thing (has temp and salinity) on it, but it's nowhere near as effective/accurate. However, in the meantime I might just buy a cheap Hydrometer.
FD
oops you sound as clumsy as I often am Frank
Hope everything works out ok
Oooops, have you looked on ebay at all?
I have, much of a muchness in terms of price.
numbnuts